Rationalize the Denominator and Simplify Further, If Possible $\sqrt { \frac { 64 } { x ^ { 3 } } }$

Multiple Choice

Rationalize the denominator and simplify further, if possible. $\sqrt { \frac { 64 } { x ^ { 3 } } }$

A) $\frac { 8 \sqrt { x } } { x ^ { 2 } }$
B) $\frac { 64 } { x ^ { 2 } }$
C) $\frac { 8 } { x ^ { 3 } }$
D) $\frac { 8 } { x ^ { 2 } }$
E) $\frac { 64 \sqrt { x } } { x }$